Flex Date 时区转换

private function getTimeZoneFix(fixDate:Date, GMTHour:NUmber = 8):Date
{
　 var gmtDate:Date = new Date(fixDate);
   var hourOffset:Number = gmtDate.getTimezoneOffset() / 60 - GMTHour;
   gmtDate.setHours(gmtDate.getHours() + hourOffset);
   return gmtDate;
}